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By: Willits, C. O. (Charles Oliver), - Hills, Claude Hibbard,Edition: Slightly rev.Publication info: Washington, Agricultural Research Service, U.S. Dept. of Agriculture : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1976Volume: no.134 (1963)Series:Holding Institution: Prelinger LibrarySubjects:BHL Collections: